Associate the following terms with traditional Marxism:
1. Base & superstructure
2. Class; proletariat; means of production
3. Bourgeois
4. (Capitalist) imperialism
5. Dialectical materialism
Major writers include:
Karl Marx; Friedrich Engels; Georg Lukacs; Walter Benjamin; Raymond Williams; Frederic Jameson.
Marxism influenced the later New Historicism & Sociological Criticism as well as Identity Criticism in that they all treat literature as primarily the product of external, historical forces.
For more information, I recommend Culler's Literary Theory: A Very Short Introduction